Hard reset or 30/30/30

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Revision as of 14:32, 5 November 2008 (edit)
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(Hard Reset (aka 30/30/30 reset):)
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Revision as of 02:25, 2 December 2008 (edit) (undo)
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* With the unit powered on, press and hold the reset button on back of unit for 30 seconds * With the unit powered on, press and hold the reset button on back of unit for 30 seconds
* Without releasing the reset button, unplug the unit and hold reset for another 30 seconds * Without releasing the reset button, unplug the unit and hold reset for another 30 seconds
-* Plug the unit back in STILL holding the reset button a final 30 seconds (please note that this step can put Asus devices into restore mode...see note below!)+* Plug the unit back in STILL holding the reset button a final 30 seconds (please note that this step can put Asus devices into recovery mode...see note below!)
This procedure should be done BEFORE and AFTER every firmware upgrade/downgrade. This procedure should be done BEFORE and AFTER every firmware upgrade/downgrade.
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Do not use configuration restore if you change firmware builds (different svn build numbers). Do not use configuration restore if you change firmware builds (different svn build numbers).
-'''<code><font color=red>[NOTE] - For Asus units the standard 30/30/30 method will reset the router but will put it into recovery mode after the final 30 seconds. This is not a problem...but be aware of it. A forth step of power cycling the Asus units is required to finish a hard reset - 30/30/30 and have it boot normally</font></code>'''....redhawk+'''<code>[NOTE] - For Asus units the standard 30/30/30 method will reset the router but will put it into recovery mode after the final 30 seconds. This is not a problem...but be aware of it. A forth step of power cycling the Asus units is required to finish a hard reset - 30/30/30 and have it boot normally</code>'''....redhawk
====Erasing NVRAM:==== ====Erasing NVRAM:====
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(useful if you're locked out of the web interface or the reset button is disabled, broken, etc. or if your router just refuses to reset using 30/30/30). (useful if you're locked out of the web interface or the reset button is disabled, broken, etc. or if your router just refuses to reset using 30/30/30).
-'''<code><font color=red>NOTE: On some devices, resetting NVRAM in this fashion may cause more problems than it solves. For example, Asus WL-500g and the Motorola WR850G bootloader will not recreate default values and will not boot properly after being reset. If you do this on a Siemens SE505 V1, your router will not be accessible to you anymore! You will have to reflash it with the stock firmware on IP address 192.168.1.1 (NOT 192.168.2.1 as the installation procedure says!!)</font></code>'''+'''<code><font color=red>[CAUTION] - On some devices, resetting NVRAM in this fashion may cause more problems than it solves. For example, Asus WL-500g and the Motorola WR850G bootloader will not recreate default values and will not boot properly after being reset. If you do this on a Siemens SE505 V1, your router will not be accessible to you anymore! You will have to reflash it with the stock firmware on IP address 192.168.1.1 (NOT 192.168.2.1 as the installation procedure says!!)</font></code>'''
The following requires that DD-WRT already be installed on your router, and [[Telnet/SSH_and_the_Command_Line|Telnet (or SSH)]] services be enabled and accessible. The following requires that DD-WRT already be installed on your router, and [[Telnet/SSH_and_the_Command_Line|Telnet (or SSH)]] services be enabled and accessible.

Revision as of 02:25, 2 December 2008

Image:Warning.png

DO NOT attempt to reset or power cycle the router while it is still in the process of upgrading!
Wait a couple of minutes after upgrade is complete and the router has rebooted itself.


Hard Reset (aka 30/30/30 reset):

The following procedure will clear out the NVRAM and set dd-wrt back to default values:

  • With the unit powered on, press and hold the reset button on back of unit for 30 seconds
  • Without releasing the reset button, unplug the unit and hold reset for another 30 seconds
  • Plug the unit back in STILL holding the reset button a final 30 seconds (please note that this step can put Asus devices into recovery mode...see note below!)

This procedure should be done BEFORE and AFTER every firmware upgrade/downgrade.

Do not use configuration restore if you change firmware builds (different svn build numbers).

[NOTE] - For Asus units the standard 30/30/30 method will reset the router but will put it into recovery mode after the final 30 seconds. This is not a problem...but be aware of it. A forth step of power cycling the Asus units is required to finish a hard reset - 30/30/30 and have it boot normally....redhawk

Erasing NVRAM:

As an alternative method, it is possible to restore DD-WRT to default settings without using the reset button (useful if you're locked out of the web interface or the reset button is disabled, broken, etc. or if your router just refuses to reset using 30/30/30).

[CAUTION] - On some devices, resetting NVRAM in this fashion may cause more problems than it solves. For example, Asus WL-500g and the Motorola WR850G bootloader will not recreate default values and will not boot properly after being reset. If you do this on a Siemens SE505 V1, your router will not be accessible to you anymore! You will have to reflash it with the stock firmware on IP address 192.168.1.1 (NOT 192.168.2.1 as the installation procedure says!!)

The following requires that DD-WRT already be installed on your router, and Telnet (or SSH) services be enabled and accessible.

Telnet (or SSH) into 192.168.1.1

Issue commands:

erase nvram
reboot

or

mtd -r erase nvram

All should be in default settings now.

Default password

After resetting DD-WRT, you need to login with the user name "root" and password "admin".